Apparatus for making sand bricks.



Patentad Dec. 2, |902.

L. T. LEET.

` APPARATUS FOB MAKING SAND BRIGKS.

(Anuncian man my 27, 1902.)

` (no modal.)

INVENTOR ATTORNEY- t which is indicated by a Water-gage.

shown.)

UNITED STATES PATENT EEICE.

LYNN T. LEET, OF MONTREAL, CANADA.

APPARATUS FOR MAKING SAND BRICKS.

SPECIFICATION forming part of Letters Patent No. 714,807, dated December 2, 1902.. Application ined May 27.1902. senti No. 109,145. (No mdem To all whom it motyconccrn: y Be it known that L'LYNN T. LEET, a citizen of Canada, residing at Montreal, Canada, have invented a new and useful Improvemen t in Apparatus for Making Sand Bricks, of

which the followingis a specification;

This invention relates to apparatus for steam-indurating that kind of bricks which consists, essentially, of sand and l lime and which are morekgenerally known as""sand bricks.

l The apparatus will now be described with reference to the drawings, in which- Figure l is a longitudinal vertical section, and Fig. 2 a transverse vertical section, of the apparatus. y

Like letters referto the same parts throughout the description.

` A is a cylinder, of strong sheet-iron, into which steam under pressure is introduced du ring the operation of indurating.`

l B is a platform-car which serves to introduce the bricks into the cylinder, upon which they rest during the steam treatment and upon which they are removed when the operation is finished.

C is the platform of the car, upon which the bricks rest.

l D is an outlet for regulating the depth of the water of condensation in the cylinder, (Not E is a receptacle or box in which is placed the quicklime to be slaked during the operation of indurating.

F is a Water-tight lid covering the lime-receptacle.

G is a perforated partition or grid in the upper portion of the lime-receptacle upon `which the lumps of quicklirne are placed previous to the introduction of the lime-receptacle into the indurating-cylinder.

H represents holes or perforations in the sides of thelime-receptacle, all above the partition Gr. A

I represents wheels with which the lime-receptacle is supplied.

K is a track of rails upon which the limereceptacles are rolled into and out of the cylinder A.

The operation of the apparatus is as fol lows: The bricks are placed upon the platcylinder.

form-car A, and this is introduced intothe Pieces of quicklime are put on the grid G, which is located at a distance of about one-third from the top of the lime-receptacle. The cover or lid F is then applied, after which the wheeled receptacle Epis placed in position below the car A. There may be a number of these receptacles E placed under one car, depending upon the relative lengths of they car and the lime-re` ceptacle. `The cylinder is then closedA and high-pressure steam is introduced. Considerable condensation takes place when `the steam strikes the bricks and the various parts of the apparatus, and alarge portion of the steam is taken up directly by the quicklime and chemically combined therewith as water of hydration. In this way the lime is gradually slaked by steam, and as it slakes the pieces expand and disintegrate, the fine portions falling through the grid into the receptacle below, whereby fresh portions of the lumps are gradually exposed to the action of the steam until the quicklime is all slaked and converted into an impalpable powder, which falls through the grids, leaving any cores of unburnt lime or other impurities in the quicklime, if it'should contain any, remaining on the grid. The cover protects the contents of the lime-container from coming in contact-with water of condensation dripping from the bricks, car,`or other portion of the apparatus, and thereby the formation of any crusts on the surface of the pieces of quicklime is prevented, which is very important to elfecta uniform slaking of the quicklime and at the same time obtain the slaked lime in the form of a fine dry powder.

Other devices, such as properlyarranged plates or screens, may be used as an equivalent of the'cover of the lime-receptacle.

What I claim as new is- 1. The combination of a cylinder capable of sustaining great pressurc,'a container for slaking lime and means for preventing Water of condensation from coming in contact with the lime inthe container.` l

2. Acontainer for the steam-slakingof lime, comprisinga'box provided with a closed cover, a partition screen or grid in theupper portion of the box and perforations above the grid for admitting steam to the box.

IOO

l 3. In an apparatus for the steam-slakingl two'subscribing Witnesses, this 17th day of of lime, the combination of a perforated lime- May, 1902.

container with means for preventing Water of condensation from getting into the lime-con- LYNN T' LEET 5 tainer. Witnesses:

In testimony whereof I have signed my JOSHUA A. BELL, name to this speciication, in the presence of B. F. KEINARD. 

